At least 50 people have been killed & more than 200 injured after a shooting in Las Vegas-

At least 50 people have been killed and more than 200 injured after a shooting at a country music festival in Las Vegas – police said the suspect had been killed.

The gunman was identified as 64-year-old Stephen Paddock, a local resident, who was shot and killed by officers. Police are looking for a woman identified as the killer’s companion.

Las Vegas Metro Police Sheriff Joseph Lombardo told an early morning press conference the gunfire came from the 32nd floor of the Mandalay Bay, where the Paddock was killed.

Lombardo said the suspect acted alone and was not believed to be connected to any militant group.

“We have no idea what his belief system was,” he said. “Right now, we believe he was the sole aggressor and the scene is static.”

Lombardo said police were interested in his traveling companion. He named the woman as Marilou Danley. But gave no details of whether she was suspected of involvement in the attack but described her as an “associate.”

“We have not located her at this time and we are interested in talking to her for follow-up,” Lombardo said.

“We are pretty confident there is no longer a threat other than we are attempting to locate the person of interest.

“It’s an ongoing investigation. Right now, we believe he is the sole aggressor at this point.”

US President Donald Trump tweeted his response hours after the incident had happened, offering his condolences to the victims and families of the shooting.

Police had swarmed the Las Vegas strip late Sunday following reports of multiple shots fired from the Mandalay Bay casino, police and US media reported.

Best-selling country singer Jason Aldean was on stage at the time of the shooting which came towards the end of the concert.

Video footage circulating on social media showed a large crowd enjoying a concert as part of the Route 91 country music festival just outside the casino before what sounded like volleys of automatic gunfire halted the performance.

“We were watching the concert having a great time, then we heard what sounded like firecrackers,” witness Joe Pitz told the local Las Vegas Sun news outlet.

“I guess it was an automatic weapon going off but it literally sounded like firecrackers… Then soon enough there was commotion on the Mandalay Bay side of the stage. They were motioning for medics to come and safety people to come and Jason Aldean ran off the stage.

“Everybody in the vicinity went down. I don’t know if they were ducking or if they were but it was chaos.”

A shocked Aldean told his fans via Instagram that he and his band was safe.

“Tonight has been beyond horrific,” the singer wrote.

“I still dont know what to say … My Thoughts and prayers go out to everyone involved tonight.

“It hurts my heart that this would happen to anyone who was just coming out to enjoy what should have been a fun night.”

Police had earlier said they were investigating reports of an active shooter near the Mandalay Bay Casino.

Witnesses speaking to CNN described the scene. “We heard (what) sounded like a glass breaking, so you looked around to see what’s going on and then heard a pop, pop, pop,” Monique Dekerf said. “You’d think for a moment okay we’re fine, there’s no more gunfire, then it starts again.”

Another told the network that it sounded like the “shots were coming from the right side … it sounded like they were right beside us too … it was right there.”

The New York Times reported that the shooting appeared to be at a country music festival and that police were investigating reports of shooting at other venues on the city’s famous strip.

One Twitter user posted that the casino hotel was on lockdown, while another, citing police scanners, said two gunmen who had shot at a bodyguard and police were on the 32nd floor.

Witnesses heard numerous gunshots at the hotel, where police tactical teams were searching for the attacker, according to reports on CNN and in the New York Times.

Flights at Mccarran International Airport were temporarily halted after the reported shooting, the airport said on Twitter.

This video captured the moment gunshots were heard as a band performed live on stage.

First there appears to be confusion as the music suddenly stops, then more gunfire can be heard. In the background people can be heard screaming, others shout to get away from the area, while others shout “don’t push.”

Police have said multiple casualties have been taken to hospital with gunshot wounds.

In this video posted on Twitter people can be seen lying on the ground as bursts of gunfire can be heard.